Spike Assembly for Sport Shoes

ABSTRACT

A spike assembly for sport shoes includes a base with a tubular portion and a plurality of protrusions extend from the base portion in axial direction of the base portion. Each protrusion includes an inclined side and a vertical side with a rounded portion connecting between the inclined side and the vertical side. A spike member includes screw portion which is securely connected to the tubular portion and a plurality of blocks extend from the spike member. Each block includes a curved protrusion facing the screw portion. The screw portion is connected to the tubular portion and the curved protrusions are guided along the inclined sides of the protrusions and then stopped by the vertical sides of the protrusions. The spike member does not loose by the weight of the wearer.

FIELD OF THE INVENTION

The present invention relates to a spike assembly for sport shoes and the spike member is easily and securely connected to the base.

BACKGROUND OF THE INVENTION

Conventional sport shoes such as golf shoes, soccer shoes or baseball shoes require good grasp to the ground so that spikes extend from an underside of the outsole and the spikes cut into the ground to provide reliable grasp. A conventional spike assembly is shown in FIGS. 5 to 7, and generally includes a base 32 which is embedded in a recess defined in the underside of the outsole 20 of the shoe, and a spike member 33 is connected to the base 32. The base 32 includes a disk 321 with a tubular portion 322 extending from a center thereof and a spiral groove 323 is defined in an inner periphery of the tubular portion 322. A plurality of protrusions 324 extend radially from the outer periphery of the tubular portion 322. The spike member 33 includes a disk 331 and a screw potion 332 extends from a center of the first side of the disk 331. A plurality of blocks 333 extend from the disk 33 and located around the screw portion 332. Each block 333 includes a curved protrusion 334 extending therefrom which faces the screw potion 332. Spikes 335 extend from the second side of the disk 332.

When screwing the screw portion 332 with the spiral groove 323 of the tubular portion 322, the curved protrusions 334 are stopped by the protrusions 324 on the base 32 so that the user has to use a tool to rotate the spike member 33 to press the protrusions 324 to allow the curved protrusions 324 to be engaged with the recesses between the protrusions 324. The curved protrusions 324 are engaged with the recesses between the protrusions 324 in radial direction. When the wearer wears the shoes, a load applies the spike assembly and the blocks 333 are pushed outward in radial direction and the curved protrusions 324 may be guided by the slope of the recesses between the protrusions 324 so that the spike member 33 can be loosened from the base 32.

The present invention intends to provide a spike assembly for sport shoes and the spike member can be securely connected to the base in axial direction so that the wearer's weight does not affect the connection between the spike member and the base.

SUMMARY OF THE INVENTION

The present invention relates to a spike assembly for sport shoes and the spike assembly comprises a base and a spike member, wherein the base includes a first disk and a tubular portion extends from a center of a first side of the first disk. A spiral groove is defined in an inner periphery of the tubular portion. A plurality of protrusions extend axially from the first side of the first disk and are connected to an outer periphery of the tubular portion. Each protrusion is a substantially triangular protrusion and includes an inclined side relative to the first side of the first disk and a vertical side perpendicular to the first side of the first disk. A rounded portion connects the inclined side and the vertical side. The spike member includes a second disk and a screw potion extends from a center of a first side of the disk. A plurality of blocks extend from the first side of the second disk and is located around the screw portion. Each block includes a curved protrusion extending therefrom which faces the screw potion. A plurality of spikes extend from a second side of the second disk.

The screw portion is engaged with the spiral groove in the tubular portion and the curved protrusions slide along the inclined sides of the protrusions, move over the rounded portions and are stopped by the vertical sides.

The primary object of the present invention is to provide a spike assembly for sport shoes, the spike member is securely connected to the base by engaging the curved protrusions on the spike member with the vertical sides of the protrusions on the base in axial direction, such that even if the blocks are moved outward in radial direction when the wearer's weight applies to the spike assembly.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view to show the base of the spike assembly of the present invention;

FIG. 2 is an exploded view to show the spike assembly of the present invention;

FIG. 3 is a perspective view to show the spike assembly of the present invention;

FIG. 4 shows a weight is applied to the spike assembly of the present invention;

FIG. 4A is an enlarged view to show the engagement of the curved protrusion of the spike member and the vertical side of the protrusion on the base;

FIG. 5 is an exploded view to show the conventional spike assembly;

FIG. 6 is side view to show the conventional spike assembly is connected to the outsole of the sport shoe, and

FIG. 7 is a partial cross sectional view to show the engagement of the curved protrusion of the conventional spike member and the recess of the conventional base.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 to 3, the spike assembly for sport shoes of the present invention comprises a base 12 which includes a first disk 121 and a tubular portion 122 extends from a center of a first side of the first disk 121. A spiral groove 123 is defined in an inner periphery of the tubular portion 122. A plurality of protrusions 124 extend axially from the first side of the first disk 121 and are connected to an outer periphery of the tubular portion 122. Each protrusion 124 is a substantially triangular protrusion and includes an inclined side 1242 relative to the first side of the first disk 121 and a vertical side 1241 perpendicular to the first side of the first disk 121. A rounded portion connects between the inclined side 1242 and the vertical side 1241.

A spike member 13 includes a second disk 131 and a screw potion 132 extends from a center of a first side of the disk 131. A plurality of blocks 133 extend from the first side of the second disk 13 and are located around the screw portion 132. Each block 133 includes a curved protrusion 134 extending therefrom which faces the screw potion 132. A plurality of spikes 135 extend from a second side of the second disk 132.

Referring to FIGS. 4 and 4A, the screw portion 132 is engaged with the spiral groove 123 in the tubular portion 122 by rotating the spike member 13 and the curved protrusions 134 slide along the inclined sides 1242 of the protrusions 124 and move over the rounded portions, and are stopped by the vertical sides 1241.

The curved protrusions 134 of the blocks 133 are stopped by the vertical sides 1241 of the protrusions 124 so that the curved protrusions 134 cannot slide the vertical sides 1241 when the wearer applies the weight to the spike member 13.

While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention. 

1. A spike assembly for sport shoes, comprising: a base including a first disk and a tubular portion extending from a center of a first side of the first disk, a spiral groove defined in an inner periphery of the tubular portion, a plurality of protrusions extending axially from the first side of the first disk and connected to an outer periphery of the tubular portion, each protrusion being a substantially triangular protrusion and including an inclined side relative to the first side of the first disk and a vertical side perpendicular to the first side of the first disk, a rounded portion connecting between the inclined side and the vertical side, and a spike member including a second disk and a screw potion extending from a center of a first side of the disk, a plurality of blocks extending from the first side of the second disk and located around the screw portion, each block including a curved protrusion extending therefrom which faces the screw potion, a plurality of spikes extending from a second side of the second disk, the screw portion engaged with the spiral groove in the tubular portion and the curved protrusions sliding along the inclined sides of the protrusions and moving over the rounded portions and stopped by the vertical sides. 